I own a 2012 iMac “21.5 inch” and recently it shut down because it was being slow. When I turned on the Mac, it was loading very slow and it took 30 minutes to reach 100% of the bar. When it reached 100%, it stuck there for hours and hours without end. So I decided to go on YouTube to look for a solution and tried everything from Mac OSX Recovery to resetting the NVRAM or SMC to Safe Mode. And they did not seem to work. Whenever I use Recovery Mode and it took a large chunk of time to let me use Disk Utility and the beachball was preventing me from doing anything. But then when I tried Downloading a new version of MacOS, my startup disk was not there. I couldn’t do anything. Hopefully this is enough information for anyone to help me find a solution to this problem. I have online classes right now, so I haven’t done single thing yet.
